[1]雷耀虎,黄建衡,刘鑫,等.X射线微分相衬成像系统莫尔条纹对比度的改善[J].深圳大学学报理工版,2016,33(No.5(441-550)):506-510.[doi:10.3724/SP.J.1249.2016.05506]
 Lei Yaohu,Huang Jianheng,Liu Xin,et al.Improvement of visibility of moiré fringe in X-ray differential phase-contrast imaging[J].Journal of Shenzhen University Science and Engineering,2016,33(No.5(441-550)):506-510.[doi:10.3724/SP.J.1249.2016.05506]
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X射线微分相衬成像系统莫尔条纹对比度的改善()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第33卷
期数:
2016年No.5(441-550)
页码:
506-510
栏目:
光电工程
出版日期:
2016-09-24

文章信息/Info

Title:
Improvement of visibility of moiré fringe in X-ray differential phase-contrast imaging
作者:
雷耀虎黄建衡刘鑫李冀郭金川牛憨笨
深圳大学光电工程学院,光电子器件与系统教育部/广东省重点实验室,广东深圳 518060
Author(s):
Lei Yaohu Huang Jianheng Liu Xin Li Ji Guo Jinchuan and Niu Hanben
College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, Guangdong Province, P.R.China
关键词:
光学工程X射线相衬吸收光栅微铸造莫尔条纹
Keywords:
optical engineering X-ray phase contrast absorption grating micro-casting moiré fringe bismuth
分类号:
O 434.19; O 647.5
DOI:
10.3724/SP.J.1249.2016.05506
文献标志码:
A
摘要:
为制作高质量的铋吸收光栅以提高X射线微分相衬成像系统性能,针对表面改性环节对微铸造技术进行改进,以Bi2O3取代SiO2作为改进的浸润层.在周期为3 μm、深度为150 μm的分析光栅结构上制作了具有高填充率的分析光栅,获得了该光栅的扫描电子显微镜照片.为进一步表明改进微铸造技术制作分析光栅的优越性,与改进前的分析光栅进行对比.将两种光栅先后置于X射线微分干涉相衬成像系统中,分别获取了系统莫尔条纹.从最终的条纹对比度上判断,改进后的微铸造技术制作的分析光栅填充率明显提高.
Abstract:
To fabricate high performance Bi absorption gratings for use in X-ray differential phase-contrast imaging (DPCI), the micro-casting method was improved via surface modification. Bi2O3 was used in place of SiO2 as an improved wetting layer. A scanning electron microscopy shows that a high filling-ratio analyzer grating with a period of 3 μm and a depth of 150 μm is obtained. Furthermore, the superiority of the presented analyzer grating to the one fabricated using the traditional micro-casting method is revealed through a comparison of moiré patterns. These tests demonstrate an enhancement to the micro-casting method for the fabrication of absorption gratings.

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更新日期/Last Update: 2016-09-08